Re: John Atkinsons' return

No doubt there is an M-whatever spoon and fork in the mess kit....)
I took the meaning as the Mk-19 AGL.......it can be shot at personal,
just like the M203 or something lobbed by hand.

Just as with Mike Numbers (M1, M2, M3 etc) there are lots of 'Mk some 
things'. In this case there was a Mk 19 Nuclear artillery shell with 
a yield of about 15 kt. Of course I was talking about the Mk-19 AGL